Whole-genome scanning for the heat-resistance-associated genes in the Droughtmaster breed ( Bos taurus ).

Autor: Jiang A; 1Chongqing Academy of Animal Sciences, Chongqing, 402460 China., Zhang J; 1Chongqing Academy of Animal Sciences, Chongqing, 402460 China., Yuan CB; Animal Husbandry and Veterinary Bureau of Yun-Yang, Chongqing, 404500 China., Xiang BJ; 1Chongqing Academy of Animal Sciences, Chongqing, 402460 China., Huang DJ; 1Chongqing Academy of Animal Sciences, Chongqing, 402460 China., Gao LF; 1Chongqing Academy of Animal Sciences, Chongqing, 402460 China., Guang-Xin E; 3College of Animal Science and Technology, Chongqing Key Laboratory of Forage and Herbivore, Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization, Southwest University, Chongqing, 400716 China.
Jazyk: angličtina
Zdroj: 3 Biotech [3 Biotech] 2019 Mar; Vol. 9 (3), pp. 95. Date of Electronic Publication: 2019 Feb 19.
DOI: 10.1007/s13205-019-1620-0
Abstrakt: The Droughtmaster is a tropical breed of beef cattle developed in North Queensland that exhibits a combination of heat resistance and parasitic resistance from long-term artificial selection. Therefore, we used next-generation sequencing technology to screen the chromosomal regions and genes related to heat-resistance in cattle to provide data for improving cattle breeding. A total of 15,569,067 variants including 14,249,316 SNPs were obtained from two mixed pools by genome-wide resequencing. According to the results of the selective sweep analysis of the Droughtmaster pool compared to the nonheat resistant breeds pool, 81 candidate genes under selection in Droughtmaster were identified by combining Z HP and F ST analyses with a threshold standard of the top 1%, including SLC7A11, GYPC, and GYPC. In addition, 40 GO terms and 44 pathways were annotated from newly identified candidate genes. These signaling pathways were involved in environmental information processing, organismal systems, and metabolism. A majority of these genes have not been implicated in the previous studies of heat resistance. This study explored the genomic changes that result from long-term artificial selection, our findings help to explain the molecular mechanism of heat resistance in cattle.
Competing Interests: Compliance with ethical standardsAuthors declare no conflict of interest.
Databáze: MEDLINE
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